Feature:1. Powerful Detection Function: The CO alarm effectively monitors CO and coal smoke, providing timely alerts to protect the safety of your family.2. High Definition LCD Display: The intuitive display shows the detection results, allowing users to easily understand the indoor air quality.3. Reliable Alarm System: The loud alarm sound and bright flashing light warn household members of CO exceeding the safety levels.4. Sensitivity Adjustment Function: The sensitivity of the CO alarm can be adjusted according to the actual environment, preventing false alarms.5. Convenient and Easy to Use: With its compact design, the CO detector is easy to install and suitable for various application scenarios, including homes, kitchens, and gas rooms.Specification:Item Type: CO AlarmMaterial: ABSBattery Type: lithium battery, battery type: 1.5V AA x 3 (not included)Alarm Sound: Greater than 85dBAlarm Concentration:50PPM 60-90 minutes alarm100PPM 10-40 minutes alarm300PPM 3 minutes alarmElectrochemical Sensor.Package List:1 x CO Alarm2 x Screw2 x Expansion Screws1 x English Manual